Cutting – By endless band or chain knife – Including means to adjust relationship between band and...
Reexamination Certificate
2007-04-10
2007-04-10
Choi, Stephen (Department: 3724)
Cutting
By endless band or chain knife
Including means to adjust relationship between band and...
C083S809000
Reexamination Certificate
active
11196312
ABSTRACT:
A band saw is disclosed to includes a holder frame, which is movable along two vertical guide rods above the machine base and holds a saw blade and a saw blade driving mechanism, a nut fixedly provided at the top of the holder frame, a vertical motor mounted on a connecting frame at the top of the guide rods, and a screw rod threaded into the fixed nut and rotatable by the vertical motor to move the holder frame along the guide rods to the desired elevation.
REFERENCES:
patent: 547433 (1895-10-01), Hazewinkel
patent: 4048883 (1977-09-01), Lecrone
patent: 4307641 (1981-12-01), Shapleigh
patent: 4606254 (1986-08-01), Schmalz
patent: 5213022 (1993-05-01), Elgan
patent: 6766725 (2004-07-01), Yeh
patent: 6895843 (2005-05-01), Hurdle, Jr.
patent: 6966246 (2005-11-01), Yeh
Choi Stephen
Rosenberg , Klein & Lee
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